The main goal of promoting Western education was to promote pro-English attitudes among the Indians. The British wanted to remake Indian society so that it would be much more like England itself. This, they thought, would make Indians more productive and easier to govern.
Of course, this policy did not work as well as it might have. Many educated Indians came to understand that the British were not treating them as equals in the way that British ideology said they should. This led to the formation of a class of Indians who understood Western ideas of democracy and liberty and were unhappy at being denied those things.